Proton Mail

Proton Mail

Proton AG
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About

Proton Mail is the simplest way to protect your communications with built-in end-to-end encryption. Prevent data breaches, stay compliant with regulations like GDPR and HIPAA, and earn client trust. Protected by Swiss privacy laws and trusted by over 50,000 businesses, Proton Mail keeps your business data confidential and under your control. With Proton Mail and Calendar, your team can securely manage their inbox and schedule, while your organization maintains a professional presence with support for custom email domains and personalized branding. And with the Easy Switch tool, migrating from Google or Microsoft is seamless, no IT expertise required.

About

SuperMailOS is managed business email on your own domain for small teams. You bring your domain; SuperMailOS runs the mail server and handles deliverability — SPF, DKIM, DMARC, IP reputation, and warmup — so your email lands in the inbox, not the spam folder. Setup takes minutes: verify your domain with one-click DNS on Cloudflare, DigitalOcean, and other providers (or guided copy-paste on any registrar), invite your team, and start sending. Every person gets a real mailbox; aliases like hello@ and support@ are unlimited and free. Webmail is as simple as Gmail — threads, instant search, keyboard shortcuts, labels, dark mode — plus IMAP and SMTP for any mail app, and a live deliverability dashboard showing your mail landing. Flat pricing per mailbox: Pro $3/mailbox/month annually (10 GB, 3 domains), Business $5 (30 GB, unlimited domains), custom at 50+. 14-day free trial, no credit card.

Platforms Supported

Windows Supported
Mac Supported
Linux Supported
Cloud Supported
On-Premises Not Supported
iPhone Supported
iPad Supported
Android Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Anyone who needs a secure email address with built-in end-to-end encryption

Audience

Small and medium businesses, startups, agencies, and freelancers who want professional email on their own domain without running a mail server or managing DNS and deliverability themselves.

Support

Phone Support Not Supported
24/7 Live Support Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Not Supported

API

Offers API Not Supported

Screenshots and Videos

Screenshots and Videos

No images available

Pricing

$6.99/user/month
Mail Business plans include an up to 13% offer:

Mail Essentials at $6.99/month/user billed annually.

Workspace Standard at $12.99/month/user billed annually.

Workspace Premium at $19.99/month/user billed annually.
Free Version Not Supported
Free Trial Supported

Pricing

$3/month per mailbox
Free Version Not Supported
Free Trial Supported

Reviews/Ratings

Overall 4.6 / 5
ease 4.5 / 5
features 4.5 / 5
design 4.7 / 5
support 4.5 / 5

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

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Pros from Real Users

Pros

  • All tools in one place — Mail, Drive, VPN, Calendar — make work simple and efficient. Seamless sync across devices keeps everything smooth and effortless, with flexible plans for any need.
  • Trustworthy service from Switzerland. So its Europe. proton meets all legal requirements, so it is perfect for business. Availability is very good.
  • I like the fact that it was constructed around account safety and it has a fresh interface. It has a lot of features and it is quite affordable for regular users.
  • - Easy to use, - Open source, - Possible to use with a custom domain (requires a premium subscription), - Privacy orientated (something truly rare these days!)
  • The web client is great for all my needs, and ProtonMail is a privacy-respecting e-mail provider, based on Switzerland.
  • The # draw is that this is a secure, privacy-focused email alternative. It also has a very sleek interface.
  • Can encrypt if you want, or not. All settings are available and it is easy to set up everything. Have a free version that I am currently using and it is not restricted in any way. Allows for two-factor authorization.
  • ProtonMail offers encrypted emails, so it's a good option for those looking for a more private, secure email service compared to the bigger ones out there like Gmail and Outlook. It's got fairly priced options, and the free version isn't too bad either.
  • I love that my emails are end to end encrypted. I found out that Gmail reads my emails and I quickly signed up for the free version.
  • Open source Easy to use Good security and privacy Multi level security and encryption Free tier Mobile version alongside web version

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

Proton AG
Founded: 2014
Switzerland
proton.me/business/mail

Company Information

SuperMailOS
Founded: 2026
supermailos.com

Alternatives

Alternatives

Proton Calendar

Proton Calendar

Proton AG
Mutant Mail

Mutant Mail

Fresent

Categories

Calendar Supported
Email Clients Supported
Email Encryption Supported
Email Hosting Supported
Email Management Supported
Encryption Supported

Categories

Email Hosting Supported

Calendar Features

Calendar Sync Supported
Collaboration Tools Supported
Multi-Device Support Supported
Reminders Supported
Room Booking Not Supported
Scheduling Supported
Task Manaagement Supported

Email Management Features

Data Recovery Supported
Email Archiving Supported
Email Deletion Not Supported
Email Discovery Not Supported
Email Monitoring Not Supported
Email Recall Not Supported
Queue Manager Not Supported
Response Management Supported
Routing Not Supported
Shared Inboxes Not Supported
Signature Management Supported
Spam Blocker Supported
Whitelisting / Blacklisting Not Supported

Encryption Features

Central Policy Enforcement Not Supported
Drag & Drop UI Supported
Email Encryption Supported
Encryption Key Management Supported
Endpoint Encryption Supported
File Compression Not Supported
File Encryption Supported
Full Disk Encryption Not Supported
Public Key Cryptography Supported
Tokenization / Data Masking Not Supported

Integrations

All-in-One Messenger Supported
Authy Supported
Canary Mail Supported
ClearMyInbox Supported
Franz Supported
Mail Backup X Supported
Microsoft Outlook Supported
Proton Calendar Supported
Proton Drive Supported
Proton Meet Supported
Proton Pass Supported
ProxiedMail Supported
Rambox Supported
ReciteMail Supported
SSuite NetSurfer Supported
SSuite NetSurfer Prometheus Supported
Sales Robots Supported
Shift Supported
Shopify Supported
WebCatalog Desktop Supported

Integrations

All-in-One Messenger Not Supported
Authy Not Supported
Canary Mail Not Supported
ClearMyInbox Not Supported
Franz Not Supported
Mail Backup X Not Supported
Microsoft Outlook Not Supported
Proton Calendar Not Supported
Proton Drive Not Supported
Proton Meet Not Supported
Proton Pass Not Supported
ProxiedMail Not Supported
Rambox Not Supported
ReciteMail Not Supported
SSuite NetSurfer Not Supported
SSuite NetSurfer Prometheus Not Supported
Sales Robots Not Supported
Shift Not Supported
Shopify Not Supported
WebCatalog Desktop Not Supported
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